3D Numerical Simulation of the Hollow Square-typed Polymer Based on Gas-assisted Extrusion Method
According to the properties of hollow square-typed polymer extrudate, the three dimensional numerical simulation of hollow square-typed polymer extrudate based on gas-assisted extrusion technology was performed by using finite element method.Meanwhile, four different gas-assisted modes imposed on the outer and inner wall of hollow square-type extrudate were considered.The extrudate swell ratios and field distributions, such as pressure drop, velocities and normal stresses of four different gas-assisted modes were obtained and compared with each other.Research results show that the extrudate swell ratios and field distributions of different gas-assisted modes are completely different.For the mode of gas-assisted on the single wall, the extrudate swell or shrink phenomena are large due to the non-symmetric properties of field distributions.For the no gas-assisted mode, although the physical field values are large, the extrudate swell ratio is not large due to the interaction role of both walls.For the mode of gas-assisted on both walls, the physical field values, such as pressure drop, normal velocities and stresses are all diminished, and the extrudate swell phenomenon was completely eliminated.
Extrusion forming Extrudate swell Hollow polymer Gas-assisted extrusion Physical field distribution
Zhong Ren Xingyuan Huang
Key Laboratory of Optic-Electronic and Communication, Jiangxi Science and Technology Normal Universi School of Mechanical and Electrical Engineering, Nanchang University, Nanchang, 330031, China
国际会议
The 12th Asia-Pacific Conference on Materials Processing(APCMP2016)(第12届亚太材料加工会议)
青岛
英文
189-194
2016-06-16（万方平台首次上网日期，不代表论文的发表时间）